blind outlet

garage has a covered outlet.behind it are 2 bare wires connected by auto screw on connectors,2whitel wires w/same type connector,& 2 black wires
with the same type connector.wires are not live. why is this covered outlet
there?

blind outlet

And by outlet, is there just a box, or is there a receptacle that was covered up?

Anyway, it's probably just a junction for a circuit. Maybe there was a receptacle or other device there at some point. If the wires are not live, then either the circuit is turned off at the breaker, it's on a switch, or it's just plain disconnected.

I don't think anyone here is going to be able to tell you what it's for without knowing where those wires go...